This book is an annotated bibliography of criticism of the religious and the profane poetry of Alfonso X. The volume treats his poetry in its complete scope, the religious (the Cantigas de Santa Maria) as well as the forty-five profane poems, mostly satires. It does so in a chronological sequence from the earliest commentary in 1278 to the most recent criticism in 2010. The work contains five times as many entries as the original 1977 edition, including an introduction, two appendices with the profane poems and the poems treated in the items in the bibliography, and an author and subject index. Joseph T. Snow is Professor Emeritus, Michigan State University.